Steam-boiler.



Patented Mar. I9, |90I. A. P. GEER.

STEAM BGH-EB. (Application med Nov. s, 1900A) (No ModeL) trice.

AT NT ALBERT P. GEER, OF NEW LONDON, CONNECTICUT.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 670,276, dated March 19, 190] Application filed November 3, 1900. Serial No. 35,366. (No model.)

To all whom it may concern:

Be it known that I, ALBERT P. GEER, a citizen ofthe United States, residing atNew London, in the county of New London and State of Connecticut, have invented certain new and useful Improvements in Steam-Boilers, of which the following is a full, clear, and exact description.

This invention relates to steam-generators, and has for its object the improvement of the water circulation and of certain details of construction, as I will explain hereinafter.

The drawings annexed hereto illustrate a steam-generator embodying my newly-improved features.

Figure l is a front elevation of such agenerator, and Fig. 2 a side elevation of the same, each of said views being broken away in part to disclose the interior construction of the generator.

Briefly described, my invention consists of two boilers and a single steam-dome so located above the said boilers that circulation-pipes may lead from the upper portion of each boiler to the opposite or farthest side of the said steam-dome, the course of the said circulation-pipes being such that they are suitably curved to permit the Afree expansion, contraction, and consequent deflection of said pipes.

The boiler-sections are so constructed that those portions which receive the circulationpipes may be readily entered to expand the pipe ends or to repair the same whenever necessary. l have also provided a novel and effective arrangement of feed-water pipes whereby the prod uct-s of combustion are utilized, after leaving the furnace, to heat the wa,- ter in said feed-water pipes.

Referring to the drawings, the letters a, b indicate two boiler-sections, and c the steamdome, said dome being so located above the boilers that considerable intervening uespace A is provided, and in this space are located peculiarly-arranged circulation -pipes connecting' the boilers and steam-dome and also the feed-water pipes. As here illustrated, three series of circulation-pipes connect each boiler with the dome. Those that lead from boiler Ct are indicated bythe letters et a2 a3. These pipes are secured (in the usual manner) in the upper portion of the shell of boiler a, as is best seen in Fig. l. Said pipes curve upward and extend thence through the space A to a point over the companion boiler b and finally curve upward to the dome-section c, to which latter they are secured in the usual manner. The boilersection b is connected with the steam-dome in a like manner by pipes b b2 b3. These two series of circulation-pipes furnish unobstructed conduits, through which the heated waters of the two boiler-sections may pass freely upward and be discharged into the dome-section, the peculiar arrangement of pipes, dome, and boilers being such that the water of one boiler is caused to meet in the dome and commingle with the water from the or fire-box shell is preferably corrugated, as

shown, and suitable manholes b4 are provided in the boiler ends.

The boilers, steam-dome, and described pipes are all inclosed by a housing consisting of front e, back e', sides e2 e2, and base-plate e3. Exits b5 are provided at the rear of each boiler-section, so that the caloric and other products of combustion may pass freely upward into the chamber A, inclosed by the Walls e, d, and e2, where they may influence the water in the circulation-pipes and in the steam-dome as well, and said products of combustion finally find an exit through a hoodlike extension g and a smoke-stack h at the upper front portion of the complete boiler.

It will thus be seen that the caloric products of combustion influence first the water in the boilers surrounding the fire-pot, and they then pass upward from the rear end of CD C41 the boilers through the exits b5 into the chamberA, where they serve to induce and maintain a high degree of heat in the water in the circulation-pipes, as Well as in the lower part of the steam-deine c.

The letters 7c denote the several coils of feed-water pipes, the same beingr located in the chamber A and coiled around the circulation-pipes, this location and arrangement being such that the water contained in the said feed-Water coils is kept (ready to be injected into the boiler) at about the same degree of heat as the water in the circulation-pipes. One end, k', of the feed-water pipe leads into the boilers or, as here shown, into the dome, the other end, 7a2, being connected with any suitable source of Water-supply. The letter m denotes a steam -pipe leading from the dome c.

The described construction of boiler, che., maybe produced with reasonable cheapness. All of its parts may be readily reached for inspection or repairs, and the peculiar arrangement of circulation-pipes makes it particularly valuable for marine boilers, for the reason that the rollingr movement of the Vessel tends to aid rather than hinder the watercirculatiou.

Having described my invention, I claim as new and wish to secure by Letters Patentl. In combination, a pair of boilers, a steamdome located over said boilers, circulationpipes leadingr from the upper part of each of said boilers to the farthest side of the steamdome, and a feed-Water pipe coiled around the said circulation-pipes.

2. In combination, a pair of boilers, asteamdome located over said boilers, circulationpipes leading from the upper part of each of said boilers to the farthest side of the steamdome, and a feed-Water pipe coiled around the said circulation-pipes; each of the said boilers being formed of two eccentrically-arranged shells as set forth whereby increased space is provided in the upper portions ol said boilers.

Signed at Norwich, Connecticut, this 25th day of October, 1900.

ALBERT P` GEER.

Witnesses:

ALONZO M. LUTHER, FRANK H. ALLEN. 

